There was a very nice thread showing how a VW Beetle was modeled in NURBS here:

http://forums.polyloop.net/travaux-cours-finis-3d/1765-vieille-cox-nurbs.html

Although it's in French and modeled in Amapi, you could see how curves are strategically placed to support every surface applying a combination of tools. This actually sparked the thread I started several months ago about the need for a Network Surface tool, if you remember. That's the time when the Network surface tool was born in MOI. That thread probably precipitated it. I used the back of a computer mouse for a sample, though. Lol.

Sure, not everything in the Beetle thread is Network-applied, but you could see that the techniques used are very translatable to MOI.